View Full Version : Day dreaming on amp placement
I am currently running my amps with short interconnects 1m and long speaker cables 8m. John Wood recommended this set up for his amps and i think it worked best then but now i have ncores with a balanced source so running s long xlr cable is an easy option also lets me experiment with speaker cables. Mogami 2549 for the xlr.
The question then is where do i put the amps. My impulse H2 are against the rear wall. The bass horn is downward firing.
In the past i have had amps on the floor (marble plinths) to the sides and rear. Toying with a pair of subs adjacent to each. Wondering about some isolation and putting the amps on top of the subs
Any where they go there will be vibration but this might be better than the long speaker leads
Doubt if there is a difinitive answer othet than suck it and see
Not one response, despite the forum being short on new chat. The moral here being dont day dream in public...
I've got mine on top of speakers. Works fine. Im not sure why a ss amp wouldn't tbh. I've tried them in other positions and found no difference tbh, when using short speaker cable. I prefer this to longer runs of cable on speakers
I
Made in 1968
03-02-2020, 21:28
I always put the amp between the speakers, cos im a skin flint when it comes to cable lol.. I just put it anywhere on anything, makes no difference to the sound imho..
Discopants
03-02-2020, 21:31
Even SS amps you want to take care to decouple them from vibrations and surely you can do better than putting them on top of subwoofers?
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Made in 1968
03-02-2020, 21:41
If an amps make properly vibration wont happen
:D
Discopants
03-02-2020, 22:06
If an amps make properly vibration wont happen
:D
I would imagine that they can be engineered to dampen vibrations but that will remove only a fraction of the vibration that they are being subjected to.
Ive got the benefit of concrete floors here and yet Ive still heard a surprising improvement in SQ by paying very close attention to vibrations with solid state gear too. Got some black ravioli and also using fo.q tapes. You dont need to spend a fortune , i started off with a wheel barrow tyre inner tube under a chopping board.
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Made in 1968
03-02-2020, 22:09
I always say if equipment is so susceptable to tiny things like vibration it needs dumping in the nearest canal. Joking aside mate how flaming loud do you actually have you stereo up for any good quality amp to pick up enough vibration to alter the sound!!
:lol:
If the amp is a two channel amplifier, then you have no real option other than to position the amp midway between the two speakers. I assume the amplifier uses valves, so microphony could well be a problem.
I would try to place the amplifer behind a line joining the front of the two speakers.
monoblock ncores, got some more Mogami 2549 (brilliant service as always from Giraffe Audio) just waiting on the Neutriks ot arrive now then I will make up some cables and give it a try. I am leaning towards sand trays with a wooden top or maybe marble, with the amps resting on on top. Solid floor.
to be honest I am not expecting to hear the blind bit of difference but it will allow me to play about with speaker cables, even I could find some AudioNote yellow what ever the actual letter code is I could even try tri-wiring and matching the external speaker cable to the internal wiring, Then again I have a short pair of Deltec Black Slink 16 lying around.
Even SS amps you want to take care to decouple them from vibrations and surely you can do better than putting them on top of subwoofers?
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How do the solid state amps inside the subwoofers cope with the vibration? It's surprising they work at all.
Firebottle
04-02-2020, 14:57
Yes but the sub amps only deal with bass, so any vibration isn't going to affect the image/air/space quality aspect.
Heavier parts tend to be glued down on the sub amp pcb's.
monoblock ncores, got some more Mogami 2549 (brilliant service as always from Giraffe Audio) just waiting on the Neutriks ot arrive now then I will make up some cables and give it a try. I am leaning towards sand trays with a wooden top or maybe marble, with the amps resting on on top. Solid floor.
Sorry - I failed to notice in your OP that your amplifiers are monoblock units, with balanced inputs. Since you say your source also has a balanced output, then your situation is very similar to mine.
I place my monoblock amps as close to the speaker as possible (in my case directly behind each speaker), so as to use the shortest length of speaker cable(s) possible. I then run 15m balanced-line cables back to the preamp. These run under the floor, so I don't have unsightly cables running around the room.
I have the amps next to the speakers now and I must say I dont think it has made the slightest bit of difference other than it looks pants and is a pain for powering on and off. think I may revert back to the long speaker cables this week
I have the amps next to the speakers now and I must say I dont think it has made the slightest bit of difference other than it looks pants and is a pain for powering on and off. think I may revert back to the long speaker cables this week
Can take a few days for everything to settle in when you move equipment around I find, before you see if there s any improvement or not ?. I must say placing amps, cd etc on Ikea boards works a treat for me.
After 40+ years of being a non believer i am now a convert. A convert to cables can change the sound. After my short lived experiment with short speaker cables i went back to the original set up and substituted canare 4s11 for the belden 5000up the slightly thicker canare cable is definitely giving a warmer sound with more bass. Swapped back and fore several times now a very clear difference.
Actually i would go as far as to say PRAT is better too, more foot tapping. I am to say the least gob smacked.
Precisely why I use the shortest speaker cables I can manage.
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